Oil burning furnace



April '19, 1938.

E. F. AUNGER on. BURNING FURNACE Filed March 25, 1956 3maer'1tor [dW/h F. Amy

attorney Patented Apr. 19, 1938 UNITED STATES PATENT emery on. BURNING summon Edwin F. Aung er, Escondido, Calif. Application March 2a, 1936, Serial No. p.251

My invention relates to oil burning furnaces, more particularly a furnace for heating air to be distributed to rooms in the house or building, and the objects of my invention are:

First, to provide a furnace which provides a heated metallic surface and in which the air to be' heated circulates in close scrubbing relation with the heated surface for heating the air by conduction so as to provide great efliciency;

Second, to provide a furnace of this class in which the heat is conducted through narrow channels and the air to be heated circulates through narrow channels in close scrubbing relation with the wall thereof so that the air to be heated is readily heated by conduction through the wall of the heat compartment; 1

this class in which there is a metallic partition positioned between two mainheating walls which is adapted to take up the heat from the heated walls and by conduction heat the air passing adjacent thereto;

Fourth, to provide a furnace of this class in which the distribution of the heat and air to be heated is so arranged for circulation of both the heat and air to be heated that a maximum eificiency is provided in the distribution of the Third, to provide a furnace of heat and air;

Fifth, to provide a furnace of this class in i which the heat is conducted upwardly from the fire box intoa converging walled chamber, then forwardly, then outwardly, then backwardly in spaced relation to provide large heat conducting surface;

Sixth, to provide a Seventh, to provide a furnace of this class which is very simple and economical of construction, eflicient in its action, durable, and which will not readily deteriorate or get out of order.

With these and other objects in appear hereinafter, my invention consists of certain novel features of construction, combination, and arrangement of parts and portions as will be hereinafter described in detail and particularly set forth in the appended claims, reference bein had to the accompanying drawing and to the characters of reference thereon which form a part ,of'this application in which:

Fig. 1. is a sectional view-from the line l-l of Fig. 2 showing the outline of the outer casing of the furnace by dotted lines; Fig. 2 is a sectional view from the line 22 of Fig. 3 showing the outline 'of the outer casing of the furnace by furnace of this class which provides a maximum of metallic heat conducting surface in proportion to the size of the fur- 8 Claims. (01.126-99) Fig. 4 is a perspective view on a reduced scale of the furnace complete showing portions broken away to facilitate the illustration.

Similar characters of reference refer to similar parts and portions throughout the several views of the drawing;

The fire box casing i, refractory casing 2,;main casing 3, main heat collecting and distributing chamber t1, outer heat conducting chambers 5, b, and l', partition it, due connection 9, and clean out tubes it constitute the principal parts and portions of my furnace.

The casing i is preferably a metallic casing which may be readily removed from the main casing d at its lower side. Mounted in this casing i is a refractory casing 2 which is preferably made of fire clay, and in this casing 2 anysuitable oil burning apparatus may be used for heating the air. It is preferred to shape the refractory casing i so that the walls diverge backwardly as shown best in Fig. 3 of the drawing. The wall of the outer casing 3 which encloses the casing i extends upwardly. The front wall im and the two side walls db and to converge upwardly to near the top where the side walls 4b and to extend inwardly-to a central point at the top of the furnace as shown best in Figs. 1 and 2 of the drawing. These walls ta, ib, and 4c are each provided with corrugations intermediate their lower and upper sides adapted to permit ready expansion and contraction of the heated metal without otherwise distorting the same. The back wall M of the chamber d is preferably straight and it is also provided with a corrugation to permit expansion and contraction without other distortion. The walls db and 40 extend forwardly and connect with front walls 4e and M which extend outwardly in spaced relation to the vi w as will front wall 411 as shown best in Figs. 1 and 3 of verge from the vertical downwardly providing a downwardly diverging walled space between the walls 4e and if and the front wall to as shown bestin Fig. 1 of the drawing. Connecting with the outer edges of the walls 4e and M are backwardly extending metallic walls 5a and 6a. which extend backwardly and inwardly inclined from the vertical as shown best in Fig. 2 of the drawing, and each of these walls is provided with a corrugation to permit expansion and contraction without other distortion. Spaced from these the drawing. These front walls 4e and 4 diwalls 5a and 6a and substantially parallel therewith are the outer walls lb and 8b which extend backwardly providing heat conducting chambers 5 and i. The walls lib and 6b connect at their front ends with the front wall la providing a continuous outer wall, the walls to and 6b connect at the back side with a wall Ia, which is an outer wall extended across the back side and in which is mounted near the lower side the flue connection 9 and the walls Saand 6a connect at their back side with a back wall lb which is spaced inwardly from the wall 1a forming a heat conducting chamber 1 which communicates with the flue connection 9.

. Between the walls 4b and Ba and 4c and 6a are formed upwardly diverging walled air conducting chambers for permitting expansion of the air without undue velocity and between the back walls 4d and the walls lb is provided the partition 8 which bisects said air conducting chamber forming two air conducting chambers on the sides and back of the main heat collecting and distributing chamber 4. Mounted on the back side in the partition Ia and in alignment with the conducting chambers 5 and 6 are'clean-out tubes I. which extend outwardly through the main wall of the furnace, shown by section lines, and which are provided with covers I011. These tubes are for the purpose of inserting brushes or other means for cleaning the conducting chambers 5 and 8.

The operation of my furnace is as follows: A suitable burner is lighted in the chamber formed by the retractory casing 2 and the heat rises therefrom as shown by the arrows upwardly into the main heat collecting and distributing chamber 4. From thence it movesforwardly around.

the end walls fie and if; then backwardly through the outer heat conducting chambers 5 and 6; then through the heat conductor chamber I andoutwardly through connection 9, heating in' such circulation the walls 617 and 40, 8a and 8a, 5b and 6b, and the partition 8; and the air passes upwardly on opposite sides of this partition 8 scrubbing the walls of the partition 8, the outer surface of the walls 4b and 4c, and the inner surface of the walls 5a and 6a and the outer surface of the wall 6d and the inner surface of the wall lb and taking the heat by conduction from said walls in its passage upwardly. From thence it is distributed in the conventional manner.

Though I have shown and described a particular construction, combination, and arrangement of parts and portions, I do not wish to be limited to this particular construction, combination, and

, arrangement, but desire to include in the scope of my invention the construction, combination and arrangement substantially as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1.1m an oil burning iurnace, a fire box, a. main heat collectingand distributing chamber -with upwardly converging side walls communibackwardly extending heat conducting chambers communicating with said outwardly extending heat conducting chambers from bottom to top and spaced from the walls of said main heat conducting and distributing chamber forming upwardly directed and upwardly enlarging air conducting passages therebetween.

2. In an oil burning furnace, a fire box, a main heat collecting and distributing chamber with upwardly, converging side walls communicating with the upper portion of said fire box, outwardly extending upwardly converging heat conducting chambers communicating therewith from bottom to top at the forward side of said heat collecting and distributing chamber, backwardly extending heat conducting chambers communicating with said outwardly extending heat conducting chambers from bottom to top and spaced from the walls of said main heat conducting and distributing chamber forming upwardly directed and upwardly enlarging air conducting passages therebetween, and substantially upright partitions in said air conducting passages at the middle thereof and extending from bottom to top of said air conducting passages.

3. In an oil burning furnace, a fire box, a main heat collecting distributing chamber with upwardly converging side walls communicating with the upper portion of said fire box, outwardly extending upwardly converging heat conducting chambers communicating therewith from bottom'to top at the forward side of said heat collecting and distributing chamber, backwardly extending heat conducting chambers communicating with said outwardly extending heat conducting chambers from bottom to top and spaced from the walls of said main heat conducting and distributing chamber forming upwardly directed and upwardly enlarging air conducting passages therebetween, substantially upright partitions in said air conducting passages at the middle thereof and extending from bottom to top of said air conducting passages, and heat conducting chambers communicating with the back end of said backwardly extending heat conducting chambers spaced from the back wall of said main heat collecting and distributing chamber and forming upwardly directed air conducting passages between said heat conducting chamber and said.

main heat collecting and distributing chamber wall.

4. In an oil burning furnace, a fire box, a main heat collecting and distributing chamber with upwardly converging side walls communicating with the upper portion of said fire box, outwardly extending upwardly converging heat conducting chambers communicating therewith from bottom to top at the forward side of said heat collecting and distributing chamber, backwardly extending heat conducting chambers communicating with said outwardly extending heat conducting chambers from bottom to top and spaced from the walls of said main heat conducting and distributing chamber forming upwardly directed and upwardly enlarging air conducting passages therebetween, substantially upright partitions. in said air conducting passages at the middle thereof and extending from bottom to top of said air conducting passages, heat conducting chambers communicating with the back end orsaid backwardly extending heat conducting chambers spaced from the back wall of said main' heat collecting and distributing chamber and forming upwardly directed air conducting pas-- sages between said heat conducting chamber and said main heat collecting and distributing chamber wall, and a-flue connection centrally at the back and at the lower side of said back heat conducting i a 5. In an oil burning furnace, a fire box, a main heat collecting and distributing chamber with upwardly converging side walls communicating with the upper portion of said fire box, outwardly extending upwardly converging heat conducting chambers communicating therewith from bottom to top at the forward side of said heat collecting and distributing chamber, backwardly extending heat conducting chambers communicating. with said outwardly extending heat conducting cham-- bers from bottom to top and spaced from the walls of said main heat conducting and distributing chamber forming upwardly directed and upwardly enlarging air conducting passages therebetween, substantially upright partitions in said air conducting passages at the middle thereof and extending from bottom to top of said air conducting passages, heatconducting chambers communicating with the back end of said backwardly extending heat conducting chambers spaced from the back wall of said main heat collecting and distributing chamber and forming upwardly directed air conducting passages between said heat conducting chamber and said main heat collecting and distributing chamber wall, a flue connection centrally at the back and at the lower side of said back heat conducting chamber, and a substantially upright partition between said heat conducting chamber and said main heat collecting and distributing chamber forming upwardly directed air conducting passages on each side of said partition at the back side of said main heat collecting and distributing chamber.

6. In an oil burning furnace, a fire box,'a main heat collecting and distributing chamber with upwardly converging side walls communicating with the upper portion of said fire box, outwardly extending upwardly converging heat conducting chambers communicating therewith from bottom totop at the forward side of said main heat collecting and distributing chamber, backwardly extending heat conducting chambers communicating with said outwardly extending heat conducting chambers from bottom to top and spaced from the walls oi said main heat conducting and dis trlbuting chamber, and a back heat conducting chamber connecting the back ends of said backwardly extending heat conducting chambers from bottom to top forming upwardly directed air conducting passages at the sides and back or said main heat collecting and distributing chamber.

7. In an oil burning-furnace, a fire box, a main heat collecting and distributing chamber with upwardly converging side walls communicating with the upper portion of said fire box, outwardly extending upwardly converging heat conducting chambers communicating therewith from bottom to top at the forward side of said main heat collecting and distributing chamber, backwardly extending heat conducting chambers communicating with saidoutwardly extending heat conducting chambers from bottom to top and spaced from the walls of said main heat conducting and distributing chamber, a back heat conducting chamber connecting the back ends of said backwardly extending heat conducting chambers from bottom to top forming upwardly directed air conducting passages at the sides and. back of said main heat collecting and distributing chamber, and a flue positioned at the middle near the lower-side of said back heat conducting chamber.

8. In an oil furnace, a iire box, a main heat collecting and distributing chamber with upwardly converging side walls communicating with the upper portion of said fire box, outwardly extending upwardly converging heat conducting chambers communicating therewith from bottom to top at the forward side of said main neat collecting and distributing chamber, backwardly extending heat conducting chambers communicating with said outwardly extending heat conducting chambers from bottom to top and spaced from the walls of said main heat conducting and distributing chamber, a back heat conducting chamber connecting the back ends of said backwardly extending heat conducting chambers from bottom to top forming upwardly directed air conducting passages at the sides and back of said main heat collecting and distributing chamber, a fine positioned at the middle near the lower side of said back he'at conducting chamber, and a substantially vertical partition extending from top to bottom in the space between said main heat collecting and distributing chamber wall and said backwardly extending heat conducting chambers and said back heat conducting chamber forming upwardly directed air conducting passages on opposite sides of said partition.

EDWIN F. AUNGER. 

